A Blackbird Interceptor gets an ASG-18 Pulse Doppler radar in this #throwback:

Raytheon’s connection with tactical fighter radars began during World War II when renowned aviator Howard Hughes’ new aerospace company gained a reputation for innovation in the defense industry. Concurrently, Raytheon Company was developing radar technology for anti-aircraft air defenses and gun control systems for bomber aircraft. After the war, Hughes Aircraft Company, which would later merge with Raytheon, won a contract to develop the E-1 Fire Control System for fighter aircraft—including the F-89 Scorpion and the F-94C Starfire—of the new U.S. Air Force. The system used the APG-33 radar to continuously measure the range, azimuth and elevation of the identified target and allow the observer to take control if the “blip” was identified as unfriendly. By the end of the decade, Hughes had completed production on 25 such systems. Along with its work on the E-Series system...